KEJIKEYI solid state relay SSR-3JKG solid state relay three-phase phase-shift trigger module
Product Details:
Product model: SSR-3JKG (including TB-3)
Brand: Hangzhou Xizi KEJIKEYI
Product series: three-phase phase-shift trigger
Contact form: normally open
Control terminal: CON 4-20mA
Product Type: G Type
Rated current: CON 4-20mA
3C rated voltage range: below 36V
product description:
The solid state relay three-phase phase-shift trigger module (hereinafter referred to as SSR-3JK) integrates three-phase electrical phase detection, phase-shift circuit and control circuit. ), without any external circuit or power supply, you can use 0-5VDC signal automatic control or potentiometer manual control to generate three-way pulse signals that can change the conduction angle and then control the three-way single-phase random type separately. The solid state relay can realize the stepless adjustment of the three-phase load voltage from 0V to the full voltage of the grid. (Note: The current level is the maximum RMS current of the thyristor inside the module)
Precautions for use:
1. The whole circuit can be applied to 380V (260V-400V), 50Hz power grid. If the user uses it on low voltage, it can be customized to our company. There is no phase sequence requirement for three-phase incoming lines (R, S, T) in the main circuit, but there must be strict one-to-one correspondence between incoming lines and output terminals of solid state relay, TB-3, SSR-3JK (such as SSR1 and CON1 corresponding to R). , otherwise the system will not work properly.
2. CON to COM must be positive, if the polarity is reversed, the output will be out of control (full open or full closed). When the control terminal CON is changed from 0-5V, the voltage on the AC load is adjustable from 0V to the maximum value (for resistive loads). Among them, when CON is around 0-0.75V, it is a fully closed region, and the output of the module is reliably turned off; CON is an adjustable region around 0.75V-4.75V, that is, with the increase of the control voltage, the conduction angle ¥á increases from 150 It decreases linearly from ¡Æ to 0¡Æ, and the voltage on the AC load increases from tens of volts to the maximum value; when CON is around 4.75V-5V, it is fully open, and the voltage on the AC load is the maximum value, that is, the grid voltage.
3. The input impedance of E, F, H series CON to COM is greater than 30K¥Ø. The +5V voltage signal is only provided to the manual potentiometer, not for other purposes. The resistance value of the selected potentiometer is between 2-10K¥Ø.
4. The four COMs of SSR-3JK are connected inside the module, which are weak current "ground", (the "ground N" of the center line of the synchronous transformer is fully isolated) in the automatic control mode with the DC "ground" controlled by the external circuit. "connected.
5. When the three-phase load is Y-shaped, the center point of Y can be connected or not connected to the center line, but the interference of higher harmonics to the power grid when the center line is connected is greater than that when the center line is not connected. The N line on the synchronous transformer TB-3 must be reliably connected to the neutral line (center line).
6. SSR-3JK and TB-3 generate very little heat and do not need to be installed on the radiator.
7. The speed regulation of the three-phase AC asynchronous motor should usually use the frequency converter. Only the soft characteristic load such as the fan, the pump motor, or the torque motor can realize the speed regulation through the voltage regulation. When applied to the three-phase motor soft start occasion, the voltage or current closed-loop control should be considered.
8. If the load has high requirements on voltage regulation linearity and voltage regulation, please add a voltage negative feedback module.
9. Since the SSR-3JK is isolated from the power grid through the synchronous transformer TB-3 on the one hand, and isolated from the power grid through the three-way solid-state relay on the other hand, the SSR-3JK module is extremely reliable under weak current operation, and even if the three-phase load is short-circuited, After burning the solid state relay, the SSR-3JK will not be damaged. For this reason, our company generally recommends customers to use the three-phase voltage regulation system composed of SSR-3JK.
?? On the one hand, this solution is simpler and more reliable than the three-phase phase-shift trigger module voltage regulation system (SX-JKA plus six one-way thyristors). One or two SSRs are lost, and the SX-JKA system not only loses the thyristor, but also may cause damage to the SX-JKA module.
?? On the other hand, this solution is more reliable than the three-phase voltage regulation module (the phase-shift trigger circuit and the thyristor are integrated), because the three-phase voltage regulation module integrates six one-way thyristors, which is small in size and large in heat generation. It is easy to cause poor heat dissipation or unreliable operation. In addition, the damage of the three-phase voltage regulating module when the load is overcurrent will cause greater losses.
?? SR-3JK (TB-3) is matched with the random solid state relay produced by our company. When the user purchases the SSR-3JK voltage regulation system, according to the type of load (such as electric heating, transformer, fan load, etc.) and power size, choose The corresponding SSR-3JK (TB-3), three random SSRs and a radiator (among which three long strip solid state relays can be installed on the A series radiator with fan; three rectangular solid state relays Can be mounted on the radiator of E-70, F-120 or G-220 as a power unit)
packing list:
1setSSR-3JKG Solid State Relay
![](https://ae01.alicdn.com/kf/S58c3ec00be424afd9e54c1e3462a91c1P.jpg)
![](https://ae01.alicdn.com/kf/Sf59faddc4bed46f395cde1668391838fl.jpg)
![](https://ae01.alicdn.com/kf/S3a83db744e1f42a8987968af423a5058J.jpg)
![](https://ae01.alicdn.com/kf/S0e66f21c5f674cfab95364fbb29cc7b0Q.jpg)
![](https://ae01.alicdn.com/kf/Sda1b29d798d64a4db37bbfd8c9826627u.jpg)
![](https://ae01.alicdn.com/kf/S1b10845028094081a0d05dd4aaff0335n.jpg)
![](https://ae01.alicdn.com/kf/S5215d5215b434317a661610d7351a392r.jpg)